Home / 745,981.20-1,119,117.60-319,516.20

Finding the Fourth Proportional to 745,981.20, 1,119,117.60 and 319,516.20

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Solution

The fourth proportional to 745,981.20, 1,119,117.60 and 319,516.20 is: 479,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,981.20 : 1,119,117.60 = 319,516.20 : x
  2. Step 2: Convert to fraction form
    745,981.20/1,119,117.60 = 319,516.20/x
  3. Step 3: Cross multiply
    745,981.20x = 1,119,117.60 × 319,516.20
  4. Step 4: Simplify right side
    745,981.20x = 357,576,202,905.12
  5. Step 5: Solve for x
    x = 357,576,202,905.12/745,981.20
  6. Step 6: Final answer
    x = 479,336.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.